Download PA-80 and PA-100 Trigger Generators

PA-80 and PA-100 Trigger Generators
10 ns / div
Above waveform shows five
consecutive pulses with single cable
output into 50 ohm load.
Features
• Fast-risetime, high-voltage
pulsers generate 80 kV, and
100 kV, respectively, into 50 Ω
• Pulse voltage doubles into highimpedance loads
• Reliable, uncomplicated system
assures low-jitter triggering
L-3 Communications • Pulse Sciences • 2700 Merced St. • San Leandro, CA 94577-0599 • Phone (510) 577-7150 • Fax (510) 577-7129
General Description
The PA-80 and PA-100 high-voltage trigger generators produce very fast risetime, high-voltage output
pulses into as many as 6 parallel coaxial cables. The pulse amplitude in the output cables is essentially
equal to the charge voltage: 80 kV and 100 kV, respectively. The peak pulse voltage at the output end
of the cables nearly doubles into high impedance loads. The pulse source is a low inductance energy
storage/discharge capacitor which is dc-charged and switched into the cables by a triggered pressurized
gas spark gap. The ease of operation and proven reliability of the PA-80 and PA-100 make them ideal
for use in numerous pulsed power applications. Low internal timing jitter and fast risetime output
pulse assure low timing jitter for the system when triggered by either of these units.
The trigger generator system consists of (1) the high-voltage assembly; (2) the remotely-located control
chassis; (3) the gas panel; and, (4) 30 feet of control cable and gas lines.
Applications
The PA-80 and PA-100 trigger generators are designed primarily as low-impedance, high-voltage trigger
sources for Marx generators, capacitor banks, and single or multiple switches. They can also be used as lowimpedance pulsers for a variety of applications, such as electromagnetic pulse injection or laser excitation.
Specifications
PA-80 Maximum charge voltage: 80 kV Output voltage into 50 Ω: 80 kV* Output pulse polarity:
Positive**
Capacitance: 0.075 µF
Std No. of output cables: 3 RG 218/u***
Output pulse risetime into one 50 Ω cable:≤ 5 ns (10%-90%)
Timing delay:
< 500 ns
Timing jitter: ≤ 5 ns rms ****
PA-100
100 kV
100 kV*
Positive**
0.01 µF
3 RG 220/u
≤ 5 ns (10%-90%)
< 500 ns
≤ 5 ns rms****
Triggering:
Both units can be triggered remotely or from pushbuttons on the control panel. For
remote triggering, a + 5 V fast rise (~ 10 ns) pulse or fiber optic trigger applied to the
external trigger input at the control panel.
Synchronization
output:
Low level (+ 10 V) synchronization outputs are provided at both the control panel
and the trigger generator.
Input power:
120 V, 50/60 Hz, 550 VA maximum
*
**
***
****
Output pulse voltage doubles if the 50 Ω output cable is terminated in a high impedance.
Negative output pulse polarity models are available upon request.
Units providing as many as 6 RG 218/µ and as many as 12 RGH 217/µ output cables are available upon request.
1 σ at 50% of self-break voltage.
L-3 Communications • Pulse Sciences • 2700 Merced St. • San Leandro, CA 94577-0599 • Phone (510) 577-7150 • Fax (510) 577-7129
System Operations
Marx Generator Triggered by a PA-80/ PA-100
Marx Output
Terminal
PA-80/ PA-100 Trigger Inputs
High-Voltage Switch Triggered by a PA-100
HV
Trigger Isolation Gap
PA-100 Output Cable
Block Diagram
High-Voltage
Assembly
50 Ω Output Cable(s)
L-3 Communications • Pulse Sciences • 2700 Merced St. • San Leandro, CA 94577-0599 • Phone (510) 577-7150 • Fax (510) 577-7129
Customer-Furnished Equipment
• Regulated SF6 at 100psi
• Output Cables
• Rack Space for Controls and Power Supply – 19" wide x 18.25 " tall
Shipping Weight
Overall Dimensions
PA-80 Approximately 300 lbs.
Pulser
Power Supply (Rack Mount)
Control Chasis
Gas Panel
20” x 20” x 60” H
19” x 24”D x 5” H
19” x 8” D x 8.25” H
19” x 8”D x 5” H
PA-100 Approximately 300 lbs.
Pulser
Power Supply (Rack Mount)
Control Chasis
Gas Panel
20” x 20” x 60” H
19” x 24”D x 5” H
19” x 8” D x 8.25” H
19” x 8”D x 5” H
L-3 Communications • Pulse Sciences • 2700 Merced St. • San Leandro, CA 94577-0599 • Phone (510) 577-7150 • Fax (510) 577-7129